Combined gas burner and grate



Nov. 5, 1929. v H. MOECKER, JR ET AL ,734,869.

COMBINED GAS BURNER mm (min Filed June 20. i928 4 Sheets$heet 1 Nov. 5, 1929'. H. MOECKER, JR., ET AL 1,734,869

COMBINED GAS BURNER AND'GR ATE 4 Sheets-Sheet 2 Filed Junmzo, 1928 %13 w K a l I I awe/(wags 5, 1929. MOECKER, JR., ET AL 1,734,869

COMBINED GAS BURNER AND GRATB Filed June 20, 1928 v 4 Shuts-Sheet 3 Nov. 5, l 929. H. MOECKER, JR., El AL. COMBINED GAS BURNER AND mun;

Filed June 20; 192

4 Shqets-Sheet 4 ..N.\ PM R QNRN Q.

Patented Na. 5, 1929' UNITED STATES PATENT OFFICE nmmx noncxnn, JR, or FLOSSMQOR, AND o'r'ro HAMMERMEISTER, or HARVEY, rumors, nssrenons TO mnmcm srovn comrnnx, or sun LOU/IS, mssoum, A

CORPORATION OF NEW COMBINED GAS BURNER AND GRATIS,

Application, illed June 20,

' solid fuel.

The primary object of this invention is to so construct the parts for feeding gas to the coal portion of the stove that they are all concealed within the ordinary portion of a combined gas and coal stove.

A further specific ob]ect of the present 1mprovement is to conceal within the ordinary closed structure a manifold for feeding the gas to the coal portion of the stove whereby the combining of the gas is not visible from the outer side of the structure.

In the drawings: I

Figure 1 is a perspective view of a range embodying the present invention.

Figure 2 is a perspective end view of the burner box and adjacent parts, the said burner box door being open to disclose its interior.

Figure 3 is a sectional perspective view showing parts of the interior of the burner box; parts of the grates; of the mixing tube and the adjacent parts of the gas manifold.

Figure 4 is a bottom view of the grate bar with which the mixing tube engages.

35 Figure5 is a cross sectional view of the grate bar shown in Figure 4.

Figure 6 is a sectional view of grate bar showing the attachment of the mixing tube therewith.

showing the gas and air inlets.

Referring now in deta l to the drawings wherein similar reference numerals are used to designate like parts, A designates a stove, range or incinerator having a burner box B located at one end -of the range inwhich is rotatably supported the twograte bars C and D, and an oven E and broiler F located at the opposite end of the range, an open burner Zhe same,

Figure 7 is an end view of the mixing tube.

1928.. Serial No. 286,894.

portion G being located between the oven E and the burner box B.

The gaseous fuel is supplied to thegrate by a manifold or conduit 5 through a pipe 6 carrying at itsv end a jet 7 which projects into and discharges gas into the opening 8. of the mixing tube 9 which mixing tube is supported to the outer side or end wall 10 of the range or stove by means of a flattened bracket end 11 through the medium of a bolt 12 passing through the slots 12 provided in the bracket.

In order to enable the shelf 6' to be moved in and out, the pipe 6 is provided with doubled portion 6 that bends aroundsaid shelf 6', and it also provides room for its connection 6 with the mixing tube 9.

The'inixing tube 9 in addition to having the gas inlet opening 8 is provided with an air intake opening 13 which is necessary for the proper mixture of the air and gas to bring abouta complete and efficient combustion when the gas is lighted in the burner box as'will be hereinafter further described.

.This mixing tube 9 is enlarged at one end to provide the separate and distinct gas and air inlet openings which merge towards one another-and meet in a common pipe or conduit 14. v I The grate is in reality a duplex grate inasmuch as there are two bars C and D.

By reference to Figure 4 it will be seen that the grate bar is made up of a plurality of fingers 15 as is usual or common in grate bar constructions, and that one end is provided with a bearing 16 adapted to be rotatably supported in one end or side wall of the stove or range and that the bar extends beyond this bar 16 and is provided with a squared portion 17 to receive asuitaiblehandle for the purpose of rotating or shaking the grate. A tubular member18 "extends central of the grate bar for half its length and this tubular member extends outwardly beyond the end of the grate as at 19 and by reference to Figure 4 it will be seen that this outwardly extending end portion 19 is internally bevelled as at 20 to receive the bevelled I hollow trunnion 21 which extends inwardly from the hub-like portion tube 9. I

This hollow trunnion forms a continuation of the mixing tube conduit 14 and delivers gas into the hollow tubular member 18 of the grate bar.

From the foregoing it will be seen that the grate bar is rotatably supported at oneend upon its bearing 16 and that its opposite end 22 of the mixing is rotatably supported upon the mixing tube trunnion 21 and that consequently thegrate bar can be rotated or shaken without disturbing in any way thegas connection between it and the mixing tube. As a matter of fact the grate can actually be shaken while the gas is burning.

The tubular member 18 of the grate is closed at its inner end as at 22 and throughout its length is provided with flattened extending portions 23 between the fingers 15 of the bar.

The under sides of these flattened portions 23 are provided with drilled openings 24 which communicate with the hollow tubular gas conduit 18 and provide burner orifices.

These burner orifices are on the under side of the grate and are protected by the extending and overhanging portions 25 of the flat surfaces 23 and protect these .orifices from any material such as coal or refuse placed on the upper side or face of the grate.

In the drawings the plate bar D is illustrated as an ordinary grate bar without any burner openings although it will be under-.

stood that were it advantageous or desirable the grate bar D couldbe made a duplicate of the grate b'ar C without departing from the spirit of the invention or without calling for ings, it will be readily understood that by a simple gearing, such as isrcommon in respect to grates, both of the grate bars C and D can be rotated and shaken by the application of a suitable handle to the flattened end 28 of the grate bar D, which end is at that end of the range where the grate bar C is supported upon the mixing tube trunnion. 7 I

From the construction described there is provided a grate bar for the burning of both solid and gaseous fuel either independ ent of one another or simultaneously and that the construction is such that the grate can be dumped without interfering with the gas connection in any way, and in the'event that the gas burner is being used without interfering with its continued burning. The supply of gas to the grate burner is controlled through a suitable valve or cock 29 and when gas is being supplied to the grate it can be ignited in the fire box by the application of a flame to any one of the burner orifices.

By reference especially to Figures 2 and 3 it will be'observed that where the pipe 6 connects with the manifold 5 is in a vertical plane above the shelf 6. This made it necessary to devise some means of preventing the pipe from interfering with the movement of the shelf 6 in and out. This we find is avoided by providing the pipe 6 with a doubled or offset portion 6 which passes around the shelf 6 and affords room for the connection with the mixing tube or manifold 9.

From the drawings it will also be under: stood that this manifold 9 is made 'fast to the division plate 10 between the oven E and its opposite end 2' by means of a bolt 8 is fastened to a front piece 4' which supports the grates C and D. This construction enables this manifold 9 to support the outer end of the grate C as has been previously described herein.

It will be observed from this construction that by making the grates Cand D sufliciently shorter than its housingth'at the manifold 1a is supported wholly within the housing 8' that contains the said gate whereby it is all concealed. Furthermore it will be observed that the gas supply pipe 6 is also concealed within the housing thus giving the finished stove an appearance no different from what it would be if the manifold were'omitted.

'It will also be observed that the said gas range is provided with an additional fire box B, the said fire box adapted to be used asv an incinerator or if required used as a means for making a small fire to heat the plates 5 above the said fire box. A flue 7 has its lower end connected to the rear end Gil of the fire box B (not shown) and the flue will be attached to the ordinary chimney or the outside of the building through which the fumes from the products of combustion will pass.

A grate made in accordance with this invention is simple of construction, cheap of manufacture and will burn either type of fuel efliciently.

While we have referred to the grates as being rotatable, it will be understood thatin practice it is only necessary that they should be-oscillated back and forth either for the purpose of dumping the material or for the purpose of shaking the said grate bars.

Having thus described our invention,-what we desire to claim and secure by Letters Patent is:

1. A. combined gas and coal burning stove burning portion, a grate located in the coal burning portion and sufficiently shorter than the coal burning portion to accommodate a gas manifold. a support for the front end of the grate and a gas manifold located between the said support and the outer wall of the said housing and held within the housing, and a gas supply pipe communicating with the inlet end of the manifold, whereby the parts are concealed for the purpose specified.

2. A combined gas and coal burning stove having a gas burner compartment and a coal burner compartment, a housing enclosing the said compartments, a manifold within the housing of the coal compartment, a grate supported within the. coal compartment and sufliciently shorter than the said compartment to accommodate the said manifold, the manifold being rigidly supported within the compartment whereby the gas burning part of the coal compartment is wholly concealed within the walls of the stove, for the purpose described.

3. A combined coal and gas burning stove comprising a housing including a gas burning portion and a coal burning portion. a

manifold located. within the outer wall of the coal burning portion, a grate support extending across the front end of the coal compartment and therein so that the manifold is located between .it and the said wall, means securing the manifold to the said grate support, a hollow grate supported by said securing means, the manifold having an inner open end communicating with the hollow grate and its outer end extending laterally within the housing, whereby the manifold is concealed wholly .within the housing of the stove.

4. A combined gas and coal burning stove having a housing for the gas and coal burning parts, said coal burning part having a grate support located therein a distance from the vertical wall of the housing to accommodate a manifold, a manifold located between the said support and the said housing, a hollow rate communicating with the said manifolc the manifold having its inner end provided with an inwardly extending arm firmly attached to the said support, the manifold extending laterally in an opposite direction tdthe' said arm and having its extremity provided with a gas opening and with an elongated air opening communicating with the manifold beyond the gas opening for the purpose of insuring the proper mixin of air and gas and a gas pipe connected with the gas opening, the parts combined for the purpose specified.

5. A combined gas and coal burning stove I comprising a housing for the gas and coal burning elements, a grate support for the coal burning compartment located therein and spaced from said housing sufficiently to accommodate a gas manifold, a gas manifold located in said space and having its outer end supported by the said grate support, a hollow grate supported by the said support with which the manifold communicates, the mam-- for supplying gas to the coal burning portion are concealed within the said housing.

6. A combined gas and coal stove comprising a housing fcir the gas and coal burning portions, the coal burning portion having a grate support located a distance from the outer wall to accommodate a manifold, a

manifold located within the said space of the coal burning housing, a hollow grate communicating with the manifold, an exterior manifold for the gas burning portion and thereunder a. sliding shelf, and a gas pipe concealed within the housing and extending from the gas burning manifold to the grate manifold, said pipe bent intermediately around the said shelf, the housing thus concealing all of the parts and providing sufficient space in the structure without changing the same for the said gas connection.

7. A combined gas and coal burning stove comprising a hollow grate for the coal burning portion, said grate being sufiiciently shorter than the coal burning portion to accommodate a gas manifold, a support for the front end of the grate and a gas manifold located in said space between the said support and the outer wall of the said housing, and a gas supply pipe communicatin with the inlet end of the manifold, where y the parts are concealed in the housing for the purpose specified.

In testimony whereof, we hereunto afiix our 

